The MgO-Al2O3-SiO2 system: free energy of pyrope and Al2O3-enstatite |
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| Authors: | SK Saxena |
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| Institution: | Department of Geology, Brooklyn College, Brooklyn, NY 11210, U.S.A. |
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| Abstract: | Using the model of fictive ideal components, Gibbs free energies of formation of pyrope and Al2O3-enstatite have been determined from the experimental data on coexisting garnet and orthopyroxene and orthopyroxene and spinel in the temperature range of 1200–1600 K. The negative free energies in kJ/mol are: | TK | 1200 | 1300 | 1400 | 1500 | 1600 | | Pyrope | 4869.92 | 4747.05 | 4614.26 | 4462.63 | 4311.00 | | Al2O3-enstatite | 1257.25 | 1244.28 | 1191.93 | 1158.67 | 1125.64 |
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